Useless
type: MusicGroup
genre: ambient
genre: drone
genre: vaporwave
description: Useless may refer to: Useless (film), a 2007 Chinese documentary by Jia Zhangke Useless (EP), a 2000 EP by Unloco "Useless" (song), a 1997 song by Depeche Mode "Useless", a 2009 song by Cavo from
popularity: 7
followers: 774
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfa048dcdda1b4a8ead2c0e65f7405562c0689cb15b7e92de69066ac234643172
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953924
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953924
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1d1c1903-c7b7-4d37-9074-09d7359addb3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1d1c1903-c7b7-4d37-9074-09d7359addb3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1d1c1903-c7b7-4d37-9074-09d7359addb3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T09:52:28Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa048dcdda1b4a8ead2c0e65f7405562c0689cb15b7e92de69066ac234643172. Chain 2 (Bitcoin): anchored in block 953924 (2026-06-16T09:52:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d1c1903-c7b7-4d37-9074-09d7359addb3.json and https://artists.proofprofile.net/proofs/artist/1d1c1903-c7b7-4d37-9074-09d7359addb3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T09:52:28Z
album: Hexa
  type: MusicAlbum
  date published: 2016-08-11
album: Hexa
  type: MusicAlbum
  date published: 2016-08-11
album: Hexa
  type: MusicAlbum
  date published: 2016-08-26
album: Useless II
  type: MusicAlbum
  date published: 2017-08-12
album: Useless
  type: MusicAlbum
  date published: 2017-08-12
album: Octa
  type: MusicAlbum
  date published: 2018-11-19
album: Octa
  type: MusicAlbum
  date published: 2018-11-19
album: รอคำตอบ
  type: MusicAlbum
  date published: 2020-02-14